Amphimonhystera molloyensis Tchesunov et Mokievsky, sp. n.

• Main Authors: Tchesunov, Alexei V., Mokievsky, Vadim O.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2005
• Subjects: Biodiversity; Taxonomy; Animalia; Nematoda; Adenophorea; Monhysterida; Monhysteridae; Amphimonhystera; Amphimonhystera molloyensis; Arctic; Arctic Ocean; Greenland; Molloy; Molloy Deep; Svalbard
• Online Access: https://zenodo.org/record/6265178; https://doi.org/10.5281/zenodo.6265178

Amphimonhystera molloyensis Tchesunov et Mokievsky sp. n. (Figures 4 A–E, 5 A–D & 6 A–E) Type material: Holotype male, three paratype males and two paratype females mounted in glycerin on glass slides. Type specimens is deposited in the collection of the P. P. Shirshov Institute for Oceanology, Russian Academy of Sciences, Moscow. Labels: (Holotype male ref # 1 ­ 1 / 4): RV Polarstern, ARK XVII st. 125, B(0 – 1 cm), 63 µm, 1 / 44; (Paratype male 1 and paratype female 1 ref # M­ 1 / 6): RV Polarstern, ARK XVII, st. 125, C (0–1 cm), 250 µm, 2 / 2; (Paratype male 2, ref # M­ 1 / 5): RV Polarstern, ARK XVI, St. 251, MD 316 (0–1 cm), 125 mkmµm, 1 / 13; (Paratype male 3, ref # M­ 1 / 3): RV Polarstern, ARK XVI, St. 251, MD 316 (0–1 cm), 125 mkm; (Paratype female 2, ref # M­ 1 / 7): RV Polarstern, ARK XVII, st. 125, C (0–1 cm), 125 µm, 2 / 44. Type locality: Arctic Ocean, area between Greenland and Svalbard. Holotype: st.125, 79°12.0' N 02° 34.5 ' E, 5416 m, (Molloy Deep), silt, 13 July, 2001; Paratypes: St.251, 79° 8.2 ' N & 02° 53.6 ' E, depth 5569 m (Molloy Deep), silt, 16 August, 2000; and st.125, 79°12.0' N 02° 34.5 ' E, 5416 m, (Molloy Deep), silt, 13 July, 2001. Etymology: The species name refers to the area of its findings, Molloy Deep. Morphometric data: Table 5. Specimens Holotype Paratypes Label Male 1 Male 2 Male 3 Male 4 Female 1 Female 2 dist. tail portion (%) 28 34 29 36 32 28 termin s. 6.5 6.0 5.0 6.5 7.5 6.0 Description: Body slender, elongated spindle­shape, near cylindrical. Cuticle rather thin and finely transversely striated. In one specimen (ɗ 2), subcuticular hypodermis yellow­brownish granules irregularly distributed throughout the body; pigment granules concentrated in preneural region (especially densely just posterior to the amphidial fovea) and thereafter less densely in posterior body region and tail, predominantly in ventral position. In other specimens, males and females as well, there are no conspicuous pigment granules in the anterior hypodermis. Labial region dome­shaped and ...